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Old 01-15-2008, 12:19 PM
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Default 99 Grand Oil Sending Pressure Sending Unit?

I have a 1999 Grand with the in-line 6 engine, and I need the find the oil pressure sending unit on the engine block. Where is it located?

Last edited by 38-72; 01-15-2008 at 12:25 PM.
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Old 01-15-2008, 02:15 PM
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Next to the oil filter. At least on my Xj's i6 it is.
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Old 01-16-2008, 01:17 AM
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Not to hijack your thread but,Now that that is answered what is the idle oil pressure supposed to be in psi? what about under load? Please answer, just rebuilt inline 6 and think oil pressure
might be low, its at 40 when idling, and around 58-59 when giving it good gas. Is that normal?
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Old 01-16-2008, 03:03 AM
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Yes. Mine varies from 20 -60. You even don't have to worry when it's 5 at idle and 20 at 3000 rpm. sometimes the sensors are not that accurate, sometimes with thicker oil the pressure is a bit higher than with thinner oil. No problem. An i6 can do fine with some minor wear.

Start worrying when the pressure is only 5 at 3000 rpm and zero at idle, even after replacing the sensor. You're facing a rebuild then (worn bearings and rods), but I assume you would also have other issues at that time.
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Old 01-16-2008, 12:57 PM
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Rule of thumb, even in racing circles, is 10 psi for every 1000 rpm of engine speed. More is better to an extent, less is not good at all. Yours is outstanding, don't worry about it.
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Old 01-22-2008, 03:33 PM
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Default Still looking for oil pressure sending unit

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Originally Posted by NIX View Post
Next to the oil filter. At least on my Xj's i6 it is.
I checked the area around the oil filter. Nothing to be found there. So, I am still looking for the oil pressure sending unit. Anyone else have a suggestion as to where to look next?
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Old 01-22-2008, 04:30 PM
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Right from the oilfilter you see the silver thing. That's the oil pressure sending unit. It's on the oilfilter stud.

http://img156.imageshack.us/img156/8...toffwegja0.jpg
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Old 01-27-2008, 03:28 PM
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Quote:
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Right from the oilfilter you see the silver thing. That's the oil pressure sending unit. It's on the oilfilter stud.

http://img156.imageshack.us/img156/8...toffwegja0.jpg
Thanks for the photo, but my engine doesn't have anything around the oil filter. It doesn't even have a conventional distributor - itís electronic.
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Old 01-27-2008, 03:59 PM
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Try to make some pics from different sides and angles. The thing must be somewhere.
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